:root {
  --ink: #14202b;
  --muted: #5f6f7c;
  --soft: #f5f8fb;
  --line: #dce5eb;
  --field: #1e7b4d;
  --field-dark: #0f3d2d;
  --blue: #1264ff;
  --orange: #ff7a1a;
  --lime: #b8f21d;
  --white: #ffffff;
  --shadow: 0 18px 44px rgba(24, 35, 48, 0.14);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 20;
  padding: 8px 12px;
  background: var(--white);
  color: var(--ink);
  border-radius: var(--radius);
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 72px;
  padding: 0 40px;
  color: var(--white);
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 28px rgba(24, 35, 48, 0.1);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 164px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.brand strong {
  display: block;
  font-size: 20px;
  line-height: 1.1;
}

.brand small {
  display: block;
  margin-top: 2px;
  color: currentColor;
  opacity: 0.72;
  font-size: 12px;
}

.nav-links {
  display: flex;
  gap: 28px;
  color: currentColor;
  font-size: 15px;
}

.nav-links a {
  opacity: 0.82;
}

.nav-links a:hover {
  opacity: 1;
}

.header-cta,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--radius);
  font-weight: 700;
  border: 1px solid transparent;
}

.header-cta,
.primary-button {
  color: #101820;
  background: var(--lime);
}

.secondary-button {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.08);
}

.site-header.is-scrolled .secondary-button {
  color: var(--ink);
  border-color: var(--line);
}

.hero {
  position: relative;
  min-height: 86vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: 120px 40px 56px;
  color: var(--white);
}

.hero-bg,
.hero-bg img,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 64%;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(5, 14, 22, 0.88) 0%, rgba(5, 14, 22, 0.66) 42%, rgba(5, 14, 22, 0.14) 100%),
    linear-gradient(180deg, rgba(5, 14, 22, 0.38) 0%, rgba(5, 14, 22, 0.16) 52%, rgba(5, 14, 22, 0.86) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
  padding-left: max(0px, calc((100vw - 1180px) / 2));
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--field);
  font-weight: 800;
  font-size: 14px;
}

.hero .eyebrow,
.case-band .eyebrow {
  color: var(--lime);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  font-size: 58px;
  line-height: 1.08;
  max-width: 740px;
}

h1 span {
  display: block;
}

.hero-title-phrase {
  white-space: nowrap;
}

h2 {
  margin-bottom: 14px;
  font-size: 36px;
  line-height: 1.18;
}

h3 {
  margin-bottom: 12px;
  font-size: 24px;
  line-height: 1.25;
}

.hero-copy {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0;
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 680px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-metrics li,
.tag-list span,
.capability-list span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.88);
  font-size: 14px;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
}

.proof-strip div {
  padding: 26px 40px;
  background: var(--white);
}

.proof-strip strong {
  display: block;
  margin-bottom: 4px;
  font-size: 18px;
}

.proof-strip span {
  color: var(--muted);
}

.section {
  padding: 88px 40px;
}

.section-heading {
  width: min(820px, 100%);
  margin: 0 auto 44px;
  text-align: center;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
}

.section-heading.compact {
  margin-bottom: 34px;
}

.audience-grid,
.quote-grid {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.audience-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  background: var(--white);
  box-shadow: 0 10px 30px rgba(24, 35, 48, 0.06);
}

.audience-index {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--orange);
  font-weight: 800;
}

.audience-card p,
.feature-copy p,
.wide-feature p,
.phone-copy p,
.demo-copy p,
.case-content p {
  color: var(--muted);
}

.audience-card ul,
.phone-copy ul {
  padding-left: 20px;
  margin-bottom: 0;
  color: var(--ink);
}

.product-section {
  background: var(--soft);
}

.feature-row {
  width: min(1180px, 100%);
  margin: 0 auto 56px;
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 42px;
  align-items: center;
}

.feature-row.reverse {
  grid-template-columns: 1.05fr 0.95fr;
}

.feature-row.reverse .feature-copy {
  order: 2;
}

.feature-row.reverse .media-frame {
  order: 1;
}

.feature-copy {
  padding: 12px 0;
}

.tag-list,
.capability-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.tag-list span,
.capability-list span {
  background: #e8f4ec;
  border-color: #d2e8dc;
  color: var(--field-dark);
}

.media-frame {
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: #0b1118;
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tall-media {
  max-height: 660px;
}

.wide-feature {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 34px;
  align-items: center;
  padding: 34px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line);
}

.split-section {
  background: var(--white);
}

.phone-showcase {
  width: min(1060px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 250px 250px 1fr;
  gap: 22px;
  align-items: center;
}

.phone-frame {
  overflow: hidden;
  border-radius: 28px;
  border: 10px solid #101318;
  box-shadow: var(--shadow);
  background: #101318;
}

.phone-frame img {
  width: 100%;
}

.phone-copy {
  padding-left: 16px;
}

.case-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 40px;
  align-items: center;
  padding: 72px max(40px, calc((100vw - 1180px) / 2));
  color: var(--white);
  background: #113d2c;
}

.case-content p {
  color: rgba(255, 255, 255, 0.78);
}

.case-image {
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.22);
}

.text-link {
  display: inline-flex;
  margin-top: 10px;
  color: var(--lime);
  font-weight: 800;
}

.quote-section {
  padding-top: 64px;
  padding-bottom: 64px;
}

.quote-grid blockquote {
  margin: 0;
  padding: 26px;
  border-left: 4px solid var(--orange);
  background: var(--soft);
  border-radius: var(--radius);
}

.quote-grid span {
  display: block;
  margin-bottom: 10px;
  color: var(--field);
  font-weight: 800;
}

.quote-grid p {
  margin-bottom: 0;
  font-size: 18px;
}

.demo-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: 44px;
  padding: 88px max(40px, calc((100vw - 1180px) / 2));
  background: #102538;
  color: var(--white);
}

.demo-copy p {
  color: rgba(255, 255, 255, 0.76);
}

.contact-lines {
  display: grid;
  gap: 10px;
  margin-top: 28px;
  color: var(--lime);
  font-weight: 700;
}

.lead-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.lead-form label {
  display: grid;
  gap: 7px;
  font-weight: 700;
}

.lead-form .honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.lead-form input,
.lead-form select,
.lead-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 13px;
  font: inherit;
  color: var(--ink);
  background: var(--white);
}

.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus {
  outline: 3px solid rgba(18, 100, 255, 0.18);
  border-color: var(--blue);
}

.form-button {
  border: 0;
  cursor: pointer;
  font: inherit;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--muted);
}

.form-status[data-tone="success"] {
  color: var(--field);
}

.form-status[data-tone="error"] {
  color: #b54022;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 30px 40px;
  border-top: 1px solid var(--line);
  background: var(--white);
}

.site-footer p {
  margin-bottom: 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: flex-end;
  color: var(--muted);
}

@media (max-width: 980px) {
  .site-header {
    height: 64px;
    padding: 0 20px;
  }

  .nav-links {
    display: none;
  }

  h1 {
    font-size: 42px;
  }

  h2 {
    font-size: 30px;
  }

  .hero {
    min-height: 84vh;
    padding: 96px 22px 46px;
  }

  .hero-shade {
    background:
      linear-gradient(180deg, rgba(5, 14, 22, 0.78) 0%, rgba(5, 14, 22, 0.58) 45%, rgba(5, 14, 22, 0.9) 100%);
  }

  .proof-strip,
  .audience-grid,
  .quote-grid,
  .feature-row,
  .feature-row.reverse,
  .wide-feature,
  .phone-showcase,
  .case-band,
  .demo-section {
    grid-template-columns: 1fr;
  }

  .feature-row.reverse .feature-copy,
  .feature-row.reverse .media-frame {
    order: initial;
  }

  .section,
  .case-band,
  .demo-section {
    padding-left: 22px;
    padding-right: 22px;
  }

  .phone-showcase {
    width: min(560px, 100%);
  }

  .phone-copy {
    padding-left: 0;
  }

  .case-image {
    max-width: 520px;
  }
}

@media (max-width: 620px) {
  .brand small {
    display: none;
  }

  .header-cta {
    min-height: 40px;
    padding: 0 12px;
  }

  .hero-copy {
    font-size: 17px;
  }

  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 27px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .secondary-button,
  .primary-button {
    width: 100%;
  }

  .proof-strip div,
  .audience-card,
  .wide-feature,
  .lead-form {
    padding: 20px;
  }

  .phone-showcase {
    grid-template-columns: 1fr;
  }

  .phone-frame {
    max-width: 280px;
    margin: 0 auto;
  }

  .site-footer {
    display: grid;
    padding: 28px 22px;
  }

  .footer-links {
    justify-content: flex-start;
  }
}